Paper web winder with pneumatic control circuit



1966 F. P. STAMBAUGH 3,232,549

PAPER WEB WINDER WITH PNEUMATIC CONTROL CIRCUIT Filed May 9, 1963 29 INVENTOR Freda/vb P? Sfambaayfi BY &% %NEYS United States Patent 3,232,549 PAPER WEB WINDER WITH PNEUMATEC CONTROL CIRCUIT Frederic P. Stambaugh, West Chester, Pa., designer to Beloit Eastern Corporation, Downingtown, Pa, a corporation of Delaware Filed May 9,1363, Ser. No. 279,159 4 Claims. (Cl. 24266) The present invention is generally concerned with a pressure control means and is more particularly concerned with pressure control means for paper winding machines. Paper winders generally utilize a paper roll core seated on a pair of parallel spaced winder drums that are simultaneously rotated. A paper web is passed over one or both of the winder drums and wrapped onto the paper roll core. The winder drums are rotated to wind the paper web onto the core. As paper is wound, the diameter of the paper roll increases. To insure that the paper is wound tightly on the paper roll, a predetermined pressure nip is maintained between the winding drums and the paper. To insure the proper pressure nip, a rider roll is placed on top of the paper roll to exert a predetermined downward force thereon.

The riding roll rides on top of the paper roll and moves upwardly as the diameter of the paper roll is increased. The rider roll is usually counterweighted to insure a proper balance. Air cylinders are used to raise and lower the rider roll and to relieve the weight of the rider roll as the roll of paper grows in diameter. However, one of the major detriments in this type of mechanism is that quick removal of the rider roll with counterweighted rider roll system is not possible. In high speed paper and winding operations, for instance, newspaper winders operate at speeds up to 5,000 f.p.m., it is most desirable to remove the rider roll from winding roll as quick as possible when the roll reaches the required diameter. The existing counterweighting and complicated mechanical means that are utilized on the rider rolls are completely inadequate to quickly remove the rider rolls from the vicinity of the paper roll when it is fully wound.

Therefore, it is an object of the present invention to overcome the detriments of known web winding machines and provides a system that allows the rider roll to be counterweighted with extreme accuracy as well as being automatically and quickly removed sufficiently away from the paper roll as soon as said paper roll reaches the required diameter to provide the proper nip load by its own weight. g

It is another object of the present invention to provide a system for exerting force in a predetermined improved manner.

It is another object of the present invention to provide a pneumatic control circuit for a paper machine winder that accurately counterweights the rider roll thereof during winding of paper on a paper roll and that quickly removes the rider roll from the paper roll at a predetermined time.

It is another object of the present invention to provide a fiuid control circuit which supplies a constant pressure to one side of a control means and varying pressure to the other side of said control means and depressurizes said one side of said control means at a predetermined time.

These and other objects, features and advantages of 3,232,549 Patented Feb. 1, 1986 "ice the present invention will become more apparent from a careful consideration of the following detailed description when considered in conjunction with the accompanying drawings, illustrating a preferred embodiment of the present invention and wherein like numerals and characters referred to corresponding parts throughout the several views.

On the drawings:

The figure illustrates a partial perspective schematic view with portions in cross-section of the control apparatus of the present invention.

As shown on the drawings:

The present invention is described in conjunction with a paper and paper board windingmachine but may be utilized effectively with any type of machinery that employs the principles thereof such as film and textile winders.

The paper sheet coming from the paper machine is directed over two winding drums, which are driven, and wound around a paper or fiber core. Riding on the top of the paper core in contact with the paper sheet thereon, is a rider roll. The rider roll is of sufiicient size and weight to provide a pressure nip between the winding drums and the paper roll to insure tightly winding paper on the paper roll core and thereby prevent any telescoping or slipping of said paper after the fiber core is completely wound.

As the paper starts to build up on the paper roll, the paper core shaft and the rider roll are raised. The pressure exerted by the rider roll is decreased because part of the paper roll weight is utilized to insure a sufficient pressure nip. Further, excessive pressure may cause damage to the paper.

The rider roll is connected to a counterweight and connected to the paper roll core shaft is a shaft slide mounted on an endless chain. The endless chain is suitably connected to a cam mechanism controlling a counterweight neutralizer. As the rider roll rises, the shaft slide rotates the sam mechanism so that the neutralizer decreasingly neutralizes to increase the counterweight of the rider roll. When the paper roll reaches a predetermined diameter the shaft slide rotates the cam mechanism to a predetermined point wherein the neutralizer means is completely deneutralized and the full force of the counterweight instantaneously acts on the rider roll to quickly raise the rider roll.

Referring to the drawing of the present invention there is illustrated a paper winding mechanism 10 for winding a sheet of paper 11. The paper winding mechanism has two rotatably mounted spaced parallel winding drums 12 and 13. One or both of the winding drums may be rotatably driven. On top of the winding drums is formed a paper roll 14 by the paper sheet being wound on a paper fiber core. A freely rotatable paper roll core shaft 16 is connected to the paper roll core. The paper web 11 is fed over the winding drums 12 and 13 and under the roll core and wrapped thereon. The winding drums 12 and 13 contact the paper surface and rotates the core shaft 16 to wrap the paper thereon. Riding on top of the paper roll in contact with the paper thereon is a rider roll 1% having a rotatably mounted shaft 17. The rider roll 18 in conjunction with the winding rolls 12 and 13 are utilized to insure a tight wrap of the paper onto the paper roll 14.

3 The paper being wound tighter near the roll core that! at the outer extremities of the paper roll. If the paper is wrapped loosely on to the roll core, the paper will tend to telescope when the finished paper roll is moved. However, by providing a tight winding of the paper on the roll core there is insured a paper roll that will not need to be handled with extreme delicacy to prevent telescoping and damage thereof during transportation.

The winding machine of the present invention will be described in regards to one end thereof, it being of course understood that the other end is substantially identical. Connected to each end of the rider roll shaft 17, is a chain '19 which extends upwardly therefrom and over a pair of spaced rotatable pulley members 21 and 22. T he other end of the chain 19 is mounted to one end of a downwardly acting counterweight 23. The counterweight is of a predetermined weight which is preferably heavier thanthe weight of the rider roll 13 wherein the counterweight would raise the rider roll above the surface of the paper roll it allowed to hang freely.

Mounted above the winder 16 is a cross shaft 24- having mounted on each end t erect a chain gear 26 and a cam 27. Connected to the chain gear 26 is a continuous chain 23 which is connected to a lower chain gear 29 positioned below the winder it Rotation of the chain 28 causes the chain gears 26 and 29 to rotate. A U-sh-ape shaft slide 31 is connected to each end of the paper roll core shaft 16 so' as to be movable therewith,- and to its respective chain 28 whereby movement of the core shaft rotates the chain.

A neutralizer, generally indicated at 30, is connected to the counterweight 23. The neutralizer neutralizes the force of the counterweight when the paper winding machine is started, to thus allow the full weight of the rider roll 18 to act on the paper roll 14. As the diameter of the paper roll increases the neutralizer deneutralizes the counterweight a predetermined amount to decrease the weight of the rider roll on the paper roll. When the paper roll is fully wound, the neutralizer is completely deneutralized to allow the full Weight of the counterweight to automatically and instantaneously act on the rider roll and thereby give the rider roll a quick-lift off the paper roll. 7

The neutralizer has a cam 32 mounted in cooperating operation below the cam 27. The cam 32 actuates a pressure regulator 33 that is connected by feed line 34 to the top portion of a piston cylinder 36. The piston 36 has a movable piston 37 dividing the cylinder into top and bottom chambers and 40. An extending piston arm 38 extends outwardly from the cylinder 36 and has its outer end mounted to the bottom of the counterweight 23.

The cylinder 36 has a lower port 39 which is located below the piston 37 and leads into the chamber 44 Conduit and passage feed line means 41 connect the port 39 to a four-way valve 42. The four-way valve 42 is connected to a pressure regulator 43 by conduit feed line 4-4 which has located thereon a pressure gauge 46. By-pass lines 45 and 45a by-pass fluid from feed lines 34 and 44 respectively into the four-way valve 42 to operate said valve.

Pressure medium supply means (not shown) directs a pressurized fluid i.e. compressed air, through supply line 47 to a supply feed line 48, which is connected to the inlet of pressure regulator 43, and to a supply feed line 49 which is connected to the inlet of pressure regulator 33. A predetermined difierential in pressure causes the valve 42 to be re-oriented as will be hereinafter described.

In operation, the weight of the counterweight is initially adjusted so that the system remains in equilibrium. With the rider roll just touching the paper roll, a fiuid pressure determined by the setting of regulator 43 is applied to the cylinder chamber 40 through the port 39. This neutralizes the force of the counterweight 23 and results in a downward force of the rider roll against the paper roll to create a hip between the paper roll and winding drums; As the paper is wound on the paper roll core, the paper roll diameter increases and the core shaft moves up= wardly to raise the shaft slide 31 that rotates the cross shaft 24 by the chain 28 and chain gear 26. Rotation of the cross shaft 24 turns the cam 27 to actuate the cam 32 tliat in turn actuates the regulator 33. As the paper roll diameter increases, the output of the regulator 33 increases. This reduces the initial force created by the rider roll on the paper roll by lowering the piston arm 3% to reduce part of the neutralizing action thereof and raising the rider roll. The pressure regulator 33 is set so that the pressure exerted by the rider roll will be greatest when the paper roll diameter is at a minimum and the least when the paper roll diameter is at its maximum.

When the output pressure of the regulator 33 is approximately 10 p.s.i greater than the initial setting of the regulater 43, the valve 42 will shift. The pressure from the regulator 43 will be blocked and the air in the cylinder chamber 40 below the piston 37 will exhaust through the port 39 through the valve exhaust 42b into the atmos phere. This pressure differential between cylinder chambers 35 and 4% will cause the piston 37 to move downwardly and thereby allow the full weight of the counterweight to act on the rider roll 18. This action by the piston cylinder 36 will thereby provide quick-lift of the rider roll.

Although the present invention has been described with a neutralizer 30 connected to each end of the counterweight 23 it is of course understood that the same results would occur if only a single neutralizer were used connected to the center of the counterweight.

Also, it is possible to operate the neutralizer of the pres ent invention by eliminating the counterweight 23 and connecting the chain 19 directly to the outer end of the piston arm 38 and allow piston chambers 35 and 40 to cause the piston 37 to act as a counterweight.

The pneumatic regulating system of the present invention may be utilized to provide a deneutralizing means for any similar mechanism utilizing a differential control cylinder. sure regulator which regulates constant fluid how and a second pressure regulator which regulates varied fluid flow.

It is therefore seen that where the applicant provides an advantageous mechanism to provide a quick-lift and a predetermined pressure load on such mechanisms as rider rolls to insure proper winding of paper webs and the like.

Although various minor modifications might be sug gested by those versed in the art it should be understood that modifications and variations may be effected without departing from the novel concepts of the present invention and I intend that the novel concepts of the present invention are only to be limited by the scope of the appended claims.

I claim as my invention:

1. In a winding machine having a rider roll riding a material winding roll means for controlling the rider roll comprising:

a counterweight connected to the rider roll and positioned in a downwardly acting direction to counter the weight of the rider roll,

said counterweight being a predetermined amount heavier than said rider roll,

control means connected to said counterweight so that when the material winding roll initially begins to wind material thereon the counterweight is urged upwardly to neutralize said counterweight and to allow the entire weight of said rider roll to act on said material winding roll,

means connected to said control means to vary the amount the control means neutralizes the counterweight directly with the increase in diameter of the material winding roll and to allow the full weight of the counterweight to act on the rider roll when the The pneumatic control system utilizes a pres-.

v desired diameter of the material winding roll is reached,

whereby said rider roll provides a full wound material winding roll wound uniformly throughout.

2. In a paper winder having a rider roll riding on top of a paper roll for providing the paper roll with a winding pressure nip, means for controlling the rider roll comprising:

a counterweight connected to the rider roll,

said counterweight being a predetermined amount heavier than said rider roll,

a pneumatically actuated piston being slidably mounted in a piston housing to divide the housing in a lower and an upper chamber,

said piston being connected to said counterweight so that when the paper roll initially begins to wind paper thereon the piston acts on the counterweight to neutralize said counterweight to allow substantially the entire weight of said rider roll to act on said paper roll,

a first pneumatic feed line connected to said piston cylinder supplying said piston cylinder upper chamber with a fluid,

a second pneumatic feed line connected to said piston cylinder supplying said piston cylinder lower chamber with fluid,

a first pressure regulator in said second feed line to supply fluid having a constant predetermined pres sure to one of said piston chambers,

a second pressure regulator in said first feed line for supplying fluid to the other of said piston chambers having varying predetermined pressure,

a first actuator means connected to said second pressure regulator to vary the fluid pressure flowing therethrough,

a conduit means for supplying pressurized fluid to said first and second feed lines,

a pressure differential valve connected to said first and second feed lines between said second pressure regulator and said piston and between the first pressure regulator and said piston,

said differential valve being mavable when a predetermined pressure ditferential between the first feed line and the second feed line is sensed to prevent fluid flow through one of the feed lines to one piston chamber and to vent said one piston chamber to the atmosphere,

a cam connected to said first actuator and said paper roll to actuate said first actuator to allow fluid to pass through said second pressure regulator having a pressure that varies :as the paper roll diameter increases,

whereby when the paper roll diameter is at its desired diameter, the differential valve will be moved to cause a sudden movement of the piston and a corresponding sudden deneutralization of the counterweight to provide a quick-lift of the rider roll off the paper roll.

3. In a paper winder having a rider roll riding on top of a paper roll for providing the paper roll with a winding pressure nip, means for controlling the rider roll comprising:

a chain connected to each end of the rider roll,

a counterweight connected to the chain and positioned in a downwardly acting direction to counter the weight of the rider roll,

said counterweight being a predetermined amount heavier than said rider roll,

a pneumatically actuated piston being slidably mounted in a piston housing to divide the housing in a lower and an upper chamber,

said piston being connected to said counterweight so that when the paper roll initially begins to wind paper thereon the piston urges the counterweight upwardly to neutralize said counterweight and allows substantially the entire weight of said rider roll to act on said paper roll,

a first pneumatic feed line connected to said piston cylinder supplying said piston cylinder upper chamber with a fluid to urge said piston downwardly,

a second pneumatic feed line connected to said piston cylinder supplying said piston cylinder lower chamber with fluid to urge said piston upwardly,

a first pressure regulator in said second feed line to supply fluid having a constant predetermined pressure to said cylinder lower chamber,

a second pressure regulator in said first feed line for supplying fluid to said cylinder upper chamber having an increasingly varying predetermined pressure,

a first actuator means connected to said second pressure regulator to vary the fluid pressure flowing therethrough,

a common branched conduit means for supplying pressurized fluid to said first and second feed lines,

a four way pressure difierential valve connected to said first and second feed lines between said second pressure regulator and said piston and between the first pressure regulator and said piston,

said four way valve being movable when a predetermined pressure dilferential between the first feed line and the second feed line is sensed so as to prevent fluid flow from said second feed line to said piston and to vent the cylinder lower chamber to the atmosphere,

a shaft slide connected to the paper roll shaft and movable therewith,

an endless chain connected to said shaft slide,

a cam mounting means,

a cam mounted on said cam mounting means,

said chain being connected to said cam mounting means to actuate said cam when said chain moves, and

said cam being connected to said first actuator to actuate said actuator to allow fluid to pass through said second pressure regulator having a pressure that increases as the paper roll diameter increases,

whereby when the paper roll diameter is at its desired diameter, the fluid pressure in the first feed line will be a predetermined amount greater than the pressure in the second feed line and the four way valve will be moved to cause a sudden downward movement of the piston and a corresponding quick-lift of the rider roll off the paper roll.

4. A pneumatic control system for providing quick lift to an auxiliary means,

a pneumatically actuated piston being slidably mounted in a piston housing to divide the housing in a lower and an upper chamber,

said piston being connected to said auxiliary means,

a first feed line connected to said piston cylinder supplying said piston cylinder upper chamber with a fluid to urge said piston downwardly,

a second feed line connected to said piston cylinder supplying said piston cylinder lower chamber with fluid to urge said piston upwardly,

a first pressure regulator in said second feed line to supply fluid having a constant predetermined pressure to said cylinder lower chamber,

a second pressure regulator in said first feed line for supplying fluid to said cylinder upper chamber having an increasingly varying predetermined pressure, a first actuator means connected to said second pressure regulator to vary the fluid pressure flowing therethrough,

a conduit means for supplying pressurized fluid to said first and second feed lines,

a four way pressure differential valve connected to said first and second feed lines between said second pressure regulator and said piston housing and between the first pressure regulator and said piston housing,

said four way valve being movable when a predetermined pressure differential between the first feed line and the second feed line is sensed so as to prevent fluid flow from said second feed line to said piston housing and to vent the piston lower chamber to the atmosphere, a cam means, means connected to said cam means to actuate said cam, and said cam being connected to said first actuator to actuate said first actuator to pass through said second pressure regulator having a predetermined increasing pressure,

whereby when the fluid pressure in the first feed line is a predetermined amount greater than the pressure in the second feed line and the four way valve will be moved to cause a sudden downward movement of the piston and a 5 quick-lift of the auxiliary means.

References Cited by the Examiner UNITED STATES PATENTS 2,733,018 1/1956 Nitche 242 66 10 2,751,164 6/1956 Saco et a1 242-766 3,009,666 11/1961 Moser 242-66 MERVIN STEIN, Primary Examiner.

15 RUSSELL C. MADER, Examiner. 

1. IN A WINDING MACHINE HAVING A RIDER ROLL RIDING A MATERIAL WINDING ROLL MEANS FOR CONTROLLING THE RIDER ROLL COMPRISING: A COUNTERWEIGHT CONNECTED TO THE RIDER ROLL AND POSITIONED IN A DOWNWARDLY ACTING DIRECTION TO COUNTER THE WEIGHT OF THE RIDER ROLL, SAID COUNTERWEIGHT BEING A PREDETERMINED AMOUNT HEAVIER THAN SAID RIDER ROLL, CONTROL MEANS CONNECTED TO SAID COUNTERWEIGHT SO THAT WHEN THE MATERIAL WINDING ROLL INITIALLY BEGINS TO WIND MATERIAL THEREON THE COUNTERWEIGHT IS URGED UPWARDLY TO NEUTRALIZE SAID COUNTERWEIGHT AND TO ALLOW THE ENTIRE WEIGHT OF SAID RIDER ROLL TO ACT ON SAID MATERIAL WINDING ROLL, MEANS CONNECTED TO SAID CONTROL MEANS TO VARY THE AMOUNT THE CONTROL MEANS NEUTRALIZES THE COUNTERWEIGHT DIRECTLY WITH THE INCREASE IN DIAMETER OF THE MATERIAL WINDING ROLL AND TO ALLOW THE FULL WEIGHT OF THE COUNTERWEIGHT TO ACT ON THE RIDER ROLL WHEN THE DESIRED DIAMETER OF THE MATERIAL WINDING ROLL IS REACHED, WHEREBY SAID RIDER ROLL PROVIDES A FULL WOUND MATERIAL WINDING ROLL WOUND UNIFORMLY THROUGHOUT. 